Prove the proverb!

Sporting Shooter - - Experts -

QWhat’s the sci­ence be­hind the ex­pres­sion ‘Swal­lows high, fine and dry. Swal­lows low, wind will blow’?

AJONNY CROCK­ETT replies: Swal­lows feed on the wing, i.e. they swoop on fly­ing in­sects. The in­sects are very sen­si­tive to baro­met­ric pres­sure. They need to be be­cause the only place they have to shel­ter in the event of rain is un­der leaves and branches. If the baro­met­ric pres­sure is high then there will be good weather as a high-pres­sure area passes over. This means that they can fly higher and so the swal­lows fly higher to feed. If a low-pres­sure area ap­proaches it in­di­cates that wind and poor weather is due. The in­sects fly nearer to shel­ter, and the swal­lows fol­low them, fly­ing low.

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